Finding the Fourth Proportional to 2,503.69, 3,755.73 and 772.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,503.69 : 3,755.73 = 772.31 : x
2. Step 2: Convert to fraction form
   2,503.69/3,755.73 = 772.31/x
3. Step 3: Cross multiply
   2,503.69x = 3,755.73 × 772.31
4. Step 4: Simplify right side
   2,503.69x = 2,900,600.12
5. Step 5: Solve for x
   x = 2,900,600.12/2,503.69
6. Step 6: Final answer
   x = 1,158.53